EXPERIMENTAL-STUDY ON THE SHEARING BEHAVIOR OF FINE-BLANKING VERSUS BAR CROPPING

This paper presents an investigation into the shearing behaviour of th e fine-blanking and bar cropping processes through their experimental performance. In this study, an individual set of tooling was designed and fabricated to carry out experiments for each type of metal cutting process. In order to investigate the phenomena of the shearing behavi our and effects during the cutting operation, certain equipment was em ployed to examine some major parameters, i.e. the surface finish, hard ness distribution, etc. Furthermore, macro-examination was also carrie d out to study other parameters, such as clearance and portion of frac ture. During the operations, all numerical data collected via experime nts are based on a system of measurement known as 'Figures of Merit' p roposed by Organ and Mellor [1]. Consequently, it is expected to obtai n some reliable findings which make it possible to judge which of the two can produce the better quality metal parts and cheaper components. (C) 1998 Elsevier Science S.A. All rights reserved.